Improvement in cultivators



J. w. SPANGLER. Improvement in Cultivators.

Patented March 26,1872.

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JACOB IV. SPANGLER, OF YORK, PENNSYLVANIA.

IMPROVEMENT IN CULTIVATORS.

Specification forming part of Letters Patent No. 125,093, dated March26, 1872.

To all whom it may concern:

Be it known that I, JACOB WV. SPANGLER, of York, county of York, Stateof Pennsylvania, have invented a new and useful Improvement inCultivators, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawing-drawingmaking part of this specification, in which- Figure 1 is a perspectiveview of a cultivator embodying my improvements. Fig. 2 is a bottom view.Fig. 3 is a vertical section through line as 3 Fig. 2.

Similar letters of reference denote corresponding parts in all figures.

The first part of the invention relates to the construction of thedevices by which the wheels are mounted upon the axles, and aredeflected from the line of draft for the purpose of enabling the driverto more effectually determine the path in which the cultivator ismoving. The invention further consists in certain details ofconstruction, which will be fully explained.

In the drawing, A is the axle, which, with the beam A and girts B B,constitutes the main frame upon which the working parts of thecultivator are mounted. O is the tongue rigidly attached to the mainframe. D is the seat, and D the seat support mounted upon the frame orupon tongue G, in about the relation shown in the drawing. E E are thewheels. E (see Fig. 3) are metal sectorplates provided at their outerends with stub axles, upon which the wheels E are mounted. These platesare pivoted to the axles at e, and are expanded at their inner ends,where they are each provided with a slot formed in the are of a circleof which the pivot e is the center. 0 e are bolts passing through thesectorslot for the purpose of securing the inner ends of the plates tothe axles. Thus the plates are free to vibrate about pivots 6, while atthe same time they are firmly secured to the axle, but little strainbeing thrown upon the pivot c. In practice, I usually place a washerunder the head of bolt 6. Plates E are further provided with arms Eextending rearward at right angles to the body of the plate. F (see Fig.2) is a rock-shaft mounted vertically in suitable bearings formed in orattached to the axle A. I F are links connecting the arms E of thesector-plate with the crank-arm of the rock-shaft F. G is a foot-treadlekeyed to the upper end of rock-shaft F. It is shown in full lines inFig. 1, and partly in full and partly in dotted lines in Fig. 3, and 'isarranged in convenient position to be operated by the feet of the driverwhile he is ridingin seat D, in a manner and for a purpose which will befully explained. H are the drag-bars, to which the hoes or plows I areattached. Bars B may be either pivoted directly to the front beam A ofthe frame hr to hooks projecting therefrom, as shown in the drawing. Therear ends of dragbar II are secured to a yielding adjustable rib H, bymeans of clips h, which are adjustable laterally in slots in the rib, asshown in Fig. 1. The clips are secured in the rib by means of nuts onthe ends of the shanks or by riveting them, the lower part of the clipsbeing enough thicker than the shanks to form shoulders, (see thedetached viewin Fig. 2,) which abut against the rib on each side of theslots, whereby the drag-bars are held more firmly in place and supportedagainst warping or twisting strain. I I are the hoes, made of 5% esiredmaterial and in any desired shape. The are attached to shanks I, bymeans of which they are secured to drag-bars H, as follows: The shanksare each provided with two pairs of legs or ears, i t, lugs i projectingfrom the upper end of the shanks, and those marked '07 being lo cated atabout their center, each pair claspin g and fitting closely thedownwardly-projecting portion of the drag-bars. Ears t" are pivoted tothe drag-bars by a metal pivot but ears 1', which are much longer,receive only a wooden pin, which is intended to be broken when anyunusual strain is thrown upon the hoe I, thus saving the other partsfrom breaking. K is a rock-shaft supported in bearings upon the frame. Lis a hand-lever connected. with the "ertical arm K of the rock-shaft bya link, L. This lever engages with a ratcheted standard on the seatsupport D. The horizontal arms is are connected with rib H by links M,the arran gement of the rock-shaft, lever, and their connecting linksbeing plainly shown in Fi 2. Links M pass through perforations in rib H,and have nuts at their lower ends, so that when the links are liftedthey carry the rib with them, but at the same time the rib is free tomove up and down on the links, being held down by the spiral spring m,the upper end of which bears against the sleeves m, which surround saidlinks. By means of lever L, which is arranged within convenient reach ofthe driver while riding in his seat, the depth to which the hoes maypenetrate the ground, and

' the amount of pressure to be applied to them,

may be regulated at will, and the hoes may be lifted as high as theframe-work will permit, for passing obstructions. N N are guards orshields designed to run on the surface of the ground. one upon each sideof the hills of corn to protect them from being covered up or injured bythe earth which is displaced by the hoes or plows when they are used.These guards are attached to the vertical arms a of a yoke, the head aof which is secured to the upper side of rib H by loops or dead-eyes insuch manner that the yoke and shield can Vibrate about the loops. Thusthe shields are free to rise and pass obstructions, but cannot fallbelow a certain level, as the horizontal arms 11. of the yoke rest uponthe rear edge of the rib, as is plainly shown in Fig. 2. Vhen the driverwishes to cause the cultivator to diverge in either direction from thecourse which it naturally pursues, as it is drawn by the team, he can doso by means of the foot-treadle G. Thus, if he wishes it to run to theleft hepushes upon the right-hand end of the treadle, thereby throwingthe wheels into the positionindicated in Fig. 3, by means of therock-shaft and conneeting links, as will be understood, by reference tothe drawing, without further explanation, and by placing the outer endsof the links in difl'erent holes in arm E the amount of deflection ofthe wheels which will be produced by a given throw of the foot-lever maybe regulated.

By this peculiar construction of sector-plate I am enabled to obtainavery firm support for the wheels, and also make a positive andunyielding connection between the rock-shaft F and the plates instead ofa slotted one, which is a great improvement. 7

Having now described my invention, what I claim as new and desire tosecure by Letters Patent, is-

1. The slotted sector-platesE provided with right angled arms E incombination with wheels E, axle A, pivots 6, bolts cJoot-t'readle Gr,rock-shaft F, and links F, substantially as described.

2. The clips h, provided with shoulders, as described, in combinationwith the slotted rib H and drag-barsH,substantiallyas set forth.

In testimony whereof have hereunto set my hand this 14th day ofSeptember, A. D. 1871.

J AOOB W. SPANGLER.

Witnesses:

EDM. F. BRowN, Y ALEXR. MAHQN.

